public class example01 {
    public static void main(String[] args) {
        int score=75;
        if(score>80) {
            System.out.println("此成绩为A");
        } else if(score>70){
            System.out.println("此成绩为B");
        }else if(score>60){
            System.out.println("此成绩为C");
        }else if(score>50){
            System.out.println("此成绩为C");
        }

    }

}
